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2018-12-12 16:20發(fā)布了問答
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多功能離子色譜儀項目國家驗收是怎么回事?
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2018-12-10 23:31發(fā)布了問答
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二甲苯氣相色譜法分析原始記錄怎么寫
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2018-12-09 13:21發(fā)布了問答
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薄層色譜掃描儀的儀器介紹
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2018-12-08 06:04發(fā)布了問答
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找英語好,懂化學(xué)的高手幫忙,急急急!翻一下下!
- Tetrabutylammoniumhydroxidesolution,Mobilephase,pH7.0Phosphatebuffer,Resolutionsolution,Standardpreparation,andChromatographicsystem—ProceedasdirectedintheAssayunderCefi... Tetrabutylammonium hydroxide solution,Mobile phase,pH7.0Phosphate buffer,Resolution solution,Standard preparation,and Chromatographic system— Proceed as directed in the Assayunder Cefixime. Assay preparation— Constitute Cefixime for Oral Suspension as directed in the labeling.Quantitatively dilute an accurately measured volume of the suspension thus obtained,freshly mixed and free from air bubbles,with pH7.0Phosphate bufferto obtain a solution having a concentration of about 0.2mg of cefixime per mL. Procedure— Proceed as directed in the Assayunder Cefixime.Calculate the quantity,in mg,of cefixime (C16H15N5O7S2)in each mLof the constituted suspension prepared from the Cefixime for Oral Suspension taken by the formula: (LC/D)(rU/rS),in which Lis the labeled quantity,in mg per mL,of cefixime in the constituted suspension,Dis the concentration,in mg per mL,of cefixime in the Assay preparationon the basis of the labeled quantity in the constituted suspension and the extent of dilution,and the other terms are as defined therein. 展開
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2017-12-14 02:34發(fā)布了問答
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反向GX液相色譜法 分離,定性和定量的 原理是什么
- RT... RT 展開
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2017-08-02 10:50發(fā)布了問答
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液相色譜測植物激素合并酯相是什么意思
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2016-12-21 23:49發(fā)布了問答
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為什么氣相色譜分析可以達到很高的分離效能
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2016-10-26 15:55發(fā)布了問答
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烴類熱裂解和mto技術(shù)生產(chǎn)乙烯的差異
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2016-08-03 21:24發(fā)布了問答
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安捷倫1260型GX液相色譜儀用什么燈
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2016-07-06 05:03發(fā)布了問答
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薄層色譜中斑點在溶劑前沿上,這是怎么回事
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2015-06-15 18:39發(fā)布了問答
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氣相色譜常用的檢測器類型有哪些
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2014-11-28 09:52發(fā)布了問答
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提高氣相色譜柱效的方法和途徑有哪些?
- 如題:提高氣相色譜柱效的方法和途徑有哪些?急需~求大神解答~~~在線等
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2013-10-13 00:20發(fā)布了問答
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幾種氣相色譜檢測器簡介
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2012-12-05 21:43發(fā)布了問答
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氣相色譜后進樣口壓力關(guān)閉是什么原因
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2008-09-16 13:57發(fā)布了問答
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三聚氰胺的檢測方法
- 我需要檢測下我吃的奶粉````成人的```
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2006-10-07 22:50發(fā)布了問答
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正氯丁烷 仲氯丁烷 正溴丁烷 仲溴丁烷氣相色譜分析所用的色譜柱
- 我想分析正氯丁烷、仲氯丁烷、正溴丁烷、仲溴丁烷的混和物,所用的方法是氣相色譜分析法,我忘記了是用聚乙二醇6000還是聚乙二醇20000的固定液,請了解情況的朋友回答,謝謝.